# Accu-Chek Instant vs Instant S: What’s the Difference? Complete Comparison **By Microsidd India** · 2026-09-21 **Accu-Chek Instant** and **Accu-Chek Instant S** belong to the same blood glucose monitoring family and use the same **Accu-Chek Instant Test Strips**, but the two meters are not identical. The biggest practical difference is connectivity: the standard **Accu-Chek Instant includes Bluetooth connectivity, mySugr synchronization and a backlit display**, while **Accu-Chek Instant S** focuses on straightforward blood glucose testing without those added wireless features. Both systems still share the core Instant testing platform, including fast results, a small blood sample, Easy-Edge test-strip dosing, target-range indication and compatible Accu-Chek Instant strips. **Quick answer:** Choose **Accu-Chek Instant** if Bluetooth and compatible mySugr synchronization are important to you. Choose **Accu-Chek Instant S** if you primarily want a simpler Instant-family meter for routine blood glucose testing. [**Shop Accu-Chek Instant & Instant S at Microsidd India →**](/collections/accu-chek-instant) * * * ## Accu-Chek Instant vs Instant S: Quick Comparison Feature Accu-Chek Instant Accu-Chek Instant S Compatible strips Accu-Chek Instant Test Strips Accu-Chek Instant Test Strips Testing time Less than 4 seconds Less than 4 seconds Blood sample Approx. 0.6 µL Approx. 0.6 µL Easy-Edge dosing Yes Yes Target-range indicator Yes Yes Memory At least 720 results At least 720 results Averages 7 / 30 / 90 days 7 / 30 / 90 days Bluetooth Yes No mySugr synchronization Yes, via compatible Bluetooth connection No direct Bluetooth synchronization Backlit display Yes No USB data transfer Yes Yes Battery configuration 2 batteries 1 battery Best suited for Connected glucose monitoring Straightforward routine testing * * * ## What Is the Accu-Chek Instant? The **Accu-Chek Instant** is the connected meter in the Instant family. It combines routine blood glucose testing with Bluetooth Low Energy connectivity and compatible digital result management. Its distinguishing features include: - Bluetooth connectivity, - compatible mySugr app synchronization, - bright backlit LCD display, - Easy-Edge test strips, - target-range indicator, - 7-, 30- and 90-day averages, - at least 720 stored blood glucose results, and - USB connectivity for supported data transfer. [**View Accu-Chek Instant Bluetooth Glucometer →**](/products/accu-chek-instant-blood-bluetooth-glucometer) * * * ## What Is the Accu-Chek Instant S? The **Accu-Chek Instant S** uses the same Instant test-strip family but removes some of the connected features found on the standard Instant meter. It is designed around the core testing functions: - less-than-four-second result time, - Easy-Edge dosing, - target-range indication, - at least 720 stored results, - 7-, 30- and 90-day averages, and - USB data-transfer capability. Accu-Chek Instant S does not include the Bluetooth and backlit-display features that differentiate the standard Instant model. ### Accu-Chek Instant S Meter Only Existing Instant-family users who already own compatible strips and sampling accessories may prefer the meter-only configuration. [**View Accu-Chek Instant S Meter Only →**](/products/accu-chek-instant-s-blood-glucometer) ### Accu-Chek Instant S Full Kit Customers starting with the system may instead choose the available full-kit configuration. Check the individual Microsidd product page for the exact current pack contents. [**View Accu-Chek Instant S Full Kit →**](/products/accu-chek-instant-s-blood-glucometer-full-kit) * * * ## Do Accu-Chek Instant and Instant S Use the Same Test Strips? **Yes.** Both meters use **Accu-Chek Instant Test Strips**. This is the key compatibility rule: **Accu-Chek Instant → Accu-Chek Instant Test Strips** **Accu-Chek Instant S → Accu-Chek Instant Test Strips** There is no separate “Instant S test strip” that customers need to purchase. The same Instant strip system is used by both meters. [**Shop Accu-Chek Instant Test Strips 50 & 100 →**](/products/accuchek-instant-test-strips-100s-pack) * * * ## Can Accu-Chek Active Strips Be Used in Instant or Instant S? **No.** Accu-Chek Active and Accu-Chek Instant are separate test-strip systems. Likewise, Guide and Performa strips should not be substituted. Strip Family Instant Instant S Accu-Chek Instant Yes Yes Accu-Chek Active No No Accu-Chek Guide No No Accu-Chek Performa No No For the complete cross-model explanation, read: [**Accu-Chek Glucometer & Test Strip Compatibility Guide →**](/blogs/knowledge-hub/accu-chek-active-vs-instant-vs-guide-vs-performa) * * * ## Difference 1: Bluetooth Connectivity Bluetooth is the clearest difference between the two meters. The **Accu-Chek Instant** includes Bluetooth Low Energy connectivity, allowing compatible result synchronization with supported digital systems such as the mySugr app. The **Instant S** does not include this Bluetooth feature. Its current connectivity option is USB. If automatic smartphone synchronization is an important requirement, the standard Instant is therefore the relevant Instant-family model. For setup and pairing instructions, see: [**Accu-Chek Instant Bluetooth & mySugr Connection Guide →**](/blogs/knowledge-hub/accu-chek-instant-bluetooth-mysugr-connection-guide) * * * ## Difference 2: mySugr App Integration Because the standard Instant includes Bluetooth, compatible blood glucose results can be synchronized with the **mySugr diabetes management app**. This can reduce the need to manually record every reading in a digital log and provides a connected workflow for users who prefer app-based result management. Instant S does not offer the same direct Bluetooth-to-mySugr workflow. Therefore: **Want Bluetooth + mySugr → Accu-Chek Instant** **Want straightforward meter-based testing → Accu-Chek Instant S** * * * ## Difference 3: Display The standard Accu-Chek Instant includes a **bright backlit LCD display**. This is one of the additional features that requires the Instant meter's two-battery configuration. Instant S has the same clear numerical testing concept and target-range indicator but does not include the additional backlit-display feature of the standard Instant. * * * ## Difference 4: Number of Batteries Accu-Chek specifies different battery configurations for the two meters: - **Accu-Chek Instant:** two batteries - **Accu-Chek Instant S:** one battery The Instant requires additional battery power because of features including Bluetooth connectivity and the backlit display. This battery difference does not change which test strips the meters use. * * * ## What Features Are the Same? Despite the connectivity differences, much of the actual blood glucose testing experience is shared. ### Same Accu-Chek Instant Test Strips Both use the same Instant strip family. ### Same Small Blood Sample Accu-Chek Instant test strips require approximately **0.6 µL of blood**. ### Same Fast Testing Both systems provide results in **less than four seconds** under the manufacturer's specified conditions. ### Same Easy-Edge Dosing Concept Both use the wide yellow Easy-Edge dosing area on the Instant strip. ### Same Target-Range Indicator Concept Both provide a visual target-range indicator to help show where a result lies relative to the configured target range. ### Same Result Averages Both provide: - 7-day averages, - 30-day averages, and - 90-day averages. ### Same Minimum Memory Capacity Both automatically store at least **720 blood glucose results**. * * * ## How Does Easy-Edge Dosing Work? Accu-Chek Instant Test Strips use a wide yellow **Easy-Edge dosing area**. The blood sample can be applied anywhere along the designated edge according to the manufacturer instructions. The strip automatically draws the blood into the testing area. This strip design is the same whether you use Instant or Instant S. * * * ## Can You Add More Blood After an Instant Test Starts? **No.** Accu-Chek states that a second drop of blood should not be added after the test has already started. If insufficient blood is applied, an **E-4** error may appear. Follow the meter instructions and repeat the test with a new strip when required. This is important because some older online descriptions incorrectly describe the Instant strip as having a “second-chance” re-dosing feature. * * * ## Do Instant and Instant S Require Coding? **No.** The current Instant-family systems do not require users to manually enter a test-strip code before routine testing. Insert a compatible Accu-Chek Instant strip and follow the testing procedure described in the meter instructions. * * * ## Accu-Chek Instant vs Instant S Memory Both meters automatically store at least **720 blood glucose results**. On the meter itself, users can view the most recent result and 7-, 30- and 90-day averages. The standard Instant additionally benefits from Bluetooth connectivity for compatible digital result synchronization. * * * ## Accu-Chek Instant vs Instant S Data Transfer Transfer Method Instant Instant S Bluetooth Yes No mySugr synchronization Yes No direct Bluetooth synchronization USB Yes Yes This makes the standard Instant more suitable for customers specifically looking for wireless result transfer. * * * ## Which Meter Is Better for Smartphone Connectivity? If smartphone connectivity is the deciding feature, **Accu-Chek Instant is the relevant model** because it includes Bluetooth. The meter can synchronize compatible results with mySugr using Bluetooth Low Energy. Read the dedicated setup guide: [**How to Connect Accu-Chek Instant to Bluetooth & mySugr →**](/blogs/knowledge-hub/accu-chek-instant-bluetooth-mysugr-connection-guide) * * * ## Which Meter Is Simpler for Basic Testing? Customers who do not require Bluetooth or smartphone synchronization may find **Accu-Chek Instant S** sufficient for routine testing. It retains the main testing features of the Instant platform: - Instant-compatible strips, - fast testing, - small blood sample, - Easy-Edge dosing, - target-range indicator, and - stored results and averages. * * * ## Instant S Full Kit vs Meter Only Microsidd currently has separate Instant S purchasing configurations. ### Instant S Full Kit Suitable when you are beginning with the Instant S system and require the supplied kit contents included in that listing. [**View Accu-Chek Instant S Full Kit →**](/products/accu-chek-instant-s-blood-glucometer-full-kit) ### Instant S Meter Only Useful when you already own compatible Instant strips and relevant blood-sampling accessories and only need another or replacement meter. [**View Accu-Chek Instant S Meter Only →**](/products/accu-chek-instant-s-blood-glucometer) * * * ## Which Test Strip Pack Should You Buy? Microsidd's current Instant-strip product listing includes **50-strip and 100-strip options**. Both quantities use the same compatible Instant strip. The difference is the number of strips supplied. Pack Consideration 50 strips Regular refill quantity 100 strips Larger quantity and potentially fewer reorders Check current stock, pricing and batch expiry before purchasing. [**View Accu-Chek Instant Test Strips 50 & 100 →**](/products/accuchek-instant-test-strips-100s-pack) * * * ## Should Existing Instant Strip Users Choose Instant or Instant S? If you already have unused, in-date **Accu-Chek Instant Test Strips**, both meter families are designed for the same Instant strip system. Your decision can therefore focus more on the meter features: - choose **Instant** if Bluetooth, mySugr and a backlit display matter, - choose **Instant S** if those added connected features are not required. * * * ## Accu-Chek Instant vs Instant S vs Active Active is a separate Accu-Chek system. The most important difference for existing users is test-strip compatibility: **Active → Active Test Strips** **Instant → Instant Test Strips** **Instant S → Instant Test Strips** If you move from Active to Instant or Instant S, your remaining Active strips will not become compatible with the new meter. For a broader meter comparison, read: [**Accu-Chek Active vs Instant S vs Instant vs Guide vs Performa →**](/blogs/knowledge-hub/accu-chek-glucometer-comparison-2026-active-vs-instant-s-vs-instant-vs-guide-vs-performa) * * * ## Which Accu-Chek Meter Should You Choose? Rather than treating one meter as universally better, match the features to your own requirements. If You Need... Consider Bluetooth Accu-Chek Instant mySugr synchronization Accu-Chek Instant Backlit display Accu-Chek Instant Simple routine testing Accu-Chek Instant S Same Instant test strips Either Instant or Instant S Fast under-4-second testing Either Instant or Instant S * * * ## AEO Quick Answers: Accu-Chek Instant vs Instant S ### What is the main difference between Accu-Chek Instant and Instant S? The standard Accu-Chek Instant includes Bluetooth, compatible mySugr synchronization and a backlit display. Instant S focuses on the core testing functions without those added connected features. ### Do Instant and Instant S use the same test strips? Yes. Both use Accu-Chek Instant Test Strips. ### Which one has Bluetooth? Accu-Chek Instant has Bluetooth connectivity. Instant S does not include the same Bluetooth feature. ### Which one connects to mySugr? The Bluetooth-enabled Accu-Chek Instant supports compatible mySugr synchronization. ### Which one has a backlit screen? The standard Accu-Chek Instant has a backlit LCD display. ### Which one uses fewer batteries? Instant S uses one battery, while the connected Instant uses two batteries to support features such as Bluetooth and the backlit display. ### Are both equally fast? Both systems provide results in less than four seconds under the manufacturer's specified testing conditions. ### How much blood do they need? The Accu-Chek Instant strip requires approximately 0.6 µL of blood. * * * ## Read the Accu-Chek Instant Complete Guide This article focuses specifically on the differences between Instant and Instant S. For the complete Instant ecosystem—including testing, strips, expiry, Easy-Edge dosing, memory, accessories and FAQs—read: [**Accu-Chek Instant & Instant S Glucometer and Test Strips: Complete Guide →**](/blogs/knowledge-hub/accu-chek-instant-instant-s-glucometer-test-strips-complete-guide) * * * ## Accu-Chek Instant Bluetooth & mySugr Guide If you are choosing the connected Instant specifically for smartphone synchronization, continue with: [**Accu-Chek Instant Bluetooth & mySugr Connection Guide →**](/blogs/knowledge-hub/accu-chek-instant-bluetooth-mysugr-connection-guide) * * * ## Check Accu-Chek Strip Compatibility If you also own Active, Guide or Performa products and are unsure which strips belong to which system, read: [**Accu-Chek Glucometer & Test Strip Compatibility Guide →**](/blogs/knowledge-hub/accu-chek-active-vs-instant-vs-guide-vs-performa) * * * ## Shop Accu-Chek Instant & Instant S Browse the entire Instant ecosystem in one place: [**Accu-Chek Instant & Instant S Collection →**](/collections/accu-chek-instant) The collection includes available Instant and Instant S meters, Instant test strips and relevant accessories. * * * ## Frequently Asked Questions About Accu-Chek Instant vs Instant S ### Is Accu-Chek Instant S the same as Accu-Chek Instant? No. They belong to the same Instant family and use the same test strips, but the standard Instant has additional Bluetooth and backlit-display features. ### Do I need different strips for Instant S? No. Both meters use Accu-Chek Instant Test Strips. ### Can Instant strips be used with both meters? Yes. Accu-Chek Instant Test Strips are intended for both Instant and Instant S. ### Does Accu-Chek Instant S connect to a smartphone? The standard Accu-Chek Instant is the Bluetooth-enabled model intended for compatible smartphone and mySugr synchronization. Instant S does not include the same Bluetooth feature. ### Does Accu-Chek Instant S have mySugr? Direct Bluetooth mySugr synchronization is a feature of the standard Accu-Chek Instant meter. ### Does Instant S have USB? Yes. Current Accu-Chek India specifications list a Micro-B USB interface for Instant S. ### Which meter has a backlit display? The standard Accu-Chek Instant includes a backlit LCD display. ### Do both meters have a target-range indicator? Yes. Both Instant-family meters provide visual target-range guidance. ### Do both meters store results? Yes. Both automatically store at least 720 blood glucose results and display 7-, 30- and 90-day averages. ### How fast do Instant and Instant S work? Both provide blood glucose results in less than four seconds under the specified testing conditions. ### How much blood is required? Approximately 0.6 µL of blood is required by the Accu-Chek Instant strip. ### Can I add a second drop of blood if the first is too small? No. Accu-Chek advises that additional blood should not be applied after the test has started. An insufficient sample can produce an E-4 error and may require retesting with a new strip. ### Do the meters require manual coding? No. Current Instant and Instant S systems do not require manual test-strip coding. ### Which Instant meter uses fewer batteries? Instant S uses one battery. The standard Instant uses two because it powers additional features including Bluetooth and the backlit display. ### Where can I buy Accu-Chek Instant and Instant S? Visit the [**Microsidd Accu-Chek Instant & Instant S Collection**](/collections/accu-chek-instant) for currently available meters, strips and accessories. * * * **Medical information notice:** This article compares device features, connectivity and product compatibility. It does not diagnose diabetes, interpret glucose readings or recommend an individual testing schedule. Follow the instructions supplied with the meter and test strips and consult a qualified healthcare professional regarding glucose targets, testing frequency and diabetes management. **Tags:** Accu-Chek Instant, Accu-chek Instant S, comparison, Glucometer Comparison: Active vs Instant S vs Instant vs Guide vs Performa --- > Source: [Microsidd India](https://microsidd.com/blogs/knowledge-hub/accu-chek-instant-vs-instant-s)