Yactul vs CGMSIM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Yactul
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Play your Yactul quizzes offline. Be coached by the app to improve your knowledge and access related learning material.
CGMSIM
Simulate managing Type 1 Diabetes by administering meals and insulin. Maintain target blood glucose levels while minimizing lows and highs. Integrate activity data for a realistic experience.
- Virtual Type 1 Diabetes subject management
- Meal and insulin administration (MDI/CSII)
- Glycemic target range maintenance
- Hypo/hyperglycemia alerts
- Activity tracker integration (Fitbit, Google Fit)
- Nightscout CGM trace display
- Success report generation
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CGMSIM lets you create a virtual Type 1 Diabetes subject, that you'll treat 24/7 with meals, multiple daily insulin injections (MDI) or a virtual insulin pump (CSII - continuous subcutaneous insulin infusion). Your goal is to maintain your virtual subject's glycemia in the treatment range 70-180 mg/dl (3.9 - 10 mmol/l) at least 70% of the time, with as few low glucose values as possible. Optional hypo- and hyperglycemia are delivered as push notifications and email alerts. CGMSIM imports your Fitbit® activity tracker's or Google Fit® activity data (steps, heart rate), which influence your subject's glycemic status. The CGM trace is displayed in Nightscout, where success reports can be generated.
Screenshots
Verdict
The clearest difference is iOS requirement: Yactul at 12.0 against CGMSIM's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Yactul ships an update every 6 weeks, CGMSIM every 2 months. The most recent releases landed on September 12, 2026 and September 16, 2026 respectively.
| Parameter | Yactul | CGMSIM |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 31 MB | 43 MB |
| Age rating | 4+ | 12+ |
| Developer | Steffen Rothkugel | Lorenzo Sandini |
In-app purchases
Yactul
No in-app purchases
CGMSIM
No in-app purchases
