# BolusCalc — user reviews > 19 indexed App Store user reviews of BolusCalc by BC Children's Hospital, rated 3.80/5 from 23 ratings. - Source: https://appshunter.io/ios/app/boluscalc/id1521364754/reviews - App overview in markdown: https://appshunter.io/ios/app/boluscalc/id1521364754.md - Rating breakdown: 5★ 9 · 4★ 4 · 3★ 7 · 2★ 2 · 1★ 1 ## Newest reviews (1 of 19) ### 3/5 — Good app but has been getting stuck *2023-02-08* We’ve used this app for quite awhile now but for the past month or so it’s been getting “frozen”. I have to close out everything and start over. Is there a fix for this? ## Most critical reviews (10 lowest-rated) ### 1/5 — What happened? *2026-03-18* Was working fine, then, my stored numbers were gone. Also, now it won’t let me put USA for home. Stuck on Canada? I updated the app and reset and the bugs they said were fixed were def not fixed. Same issue. **Developer response:** Hi there, I think I have finally fixed this glitch that some users have experienced, so sorry that's happened, but we should be good now with 2.5.1. ### 2/5 — Yesterday’s update cleared all my settings & data! *2026-01-22* Thanks for the really awful help **Developer response:** Hi there, I think I have finally fixed this glitch that some users have experienced, so sorry that's happened, but we should be good now with 2.5.1. ### 2/5 — Doesn’t seem to work *2022-10-24* Whenever i enter my BGL and tap Calculate the app switches to an all white screen and freezes. Have to force quit app to start over again. It’s a shame because the app seems to do exactly what I want in an insulin calculator app. ### 3/5 — Nice but a pain *2026-06-06* Every time it updates it resets everything to zero and to the Canadian standard! Please find away so the settings carry over! **Developer response:** Hi there, I think I have finally fixed this glitch that some users have experienced, so sorry that's happened, but we should be good now with 2.5.1. ### 3/5 — Needs to fix bugs *2026-03-16* Keeps changing to Canadian & resetting on its on, other than that very helpful **Developer response:** Hi there, I think I have finally fixed this glitch that some users have experienced, so sorry that's happened, but we should be good now with 2.5.1. ### 3/5 — Update erased my settings *2026-01-22* All of a sudden there were like 3 updates in a row and my settings are gone **Developer response:** I'm so sorry, I didn't think I did anything with the code in these updates that would do this, but I know it's a problem. Working hard to identify the problem and get it fixed. Thanks for your patience. ### 3/5 — What happened? *2026-01-21* Was working, now lost all of my stored settings in the past 24 hours. Loved the convenience but now all meal settings are absolutely blank? **Developer response:** Hi there, I think I have finally fixed this glitch that some users have experienced, so sorry that's happened, but we should be good now with 2.5.1. ### 3/5 — Add the 4 separate meals back *2024-06-05* I’ve been using this app for years and my daughter recently downloaded this on her phone and ours is different mines has 4 separate meals which is great because her ratios are different. But her app only has 1 setting and it’s not helpful please bring the 4 different settings back breakfast lunch dinner bed **Developer response:** Hi there, that option is still there. You just have to click on the wheel icon on the Home screen, which brings you to the Setting screen. Then just choose "Meal-Specific (4)" under the "Set # of Bolus Parameters" heading. ### 3/5 — Insulin on Board *2023-12-05* Are you working to add in the calculations the Insulin in Board? That would be so helpful. **Developer response:** Hi there, sorry, no. There are a number of ways to calculate IOB, and really none of them ae perfect. This would then also require users to enter the type of insulin and the time they gave the last injection, but the system wouldn't be able to track more than one injection at a time. ### 3/5 — 17+ *2023-08-13* My 12 year old son can’t use this app on his phone because it’s rated 17+. Wondering if you could lower the age rating. **Developer response:** Sorry, all "medical apps" automatically get a 17+ rating. Usually you can override this by installing yourself over parental controls. ## Most praised reviews (8 highest-rated) ### 5/5 — Useful tool *2026-03-15* So easy for when I have to do manual insulin injections **Developer response:** Glad you are finding the app handy! ### 5/5 — Easy to use but……. *2025-08-06* I’ve been using this app for almost two years—my endocrinologist set it up for me instead of using a printed graph. This is always on my phone and easy to see. But I only have one screen, the app shows 4. Also, the military time is incorrect. Can I change it to regular time? How do I update to 4 screens? Thanks for an easier way to calculate insulin. **Developer response:** Hi there, to be able to show 4 mealtimes, go to the Settings screen (the cogwheel icon on the Home screen, and under "Choose # of Bolus Parameters", pick "meal-specific (4)" and then exit the screen. The military time is from your phone. ### 5/5 — Simple, easy to understand *2025-04-07* I like that it’s set up for three different methods of calculation depending on your doctors recommendation. I also like that it saves your settings and they can be different for different meals. Would love an and be willing to pay a decent amount for IOB and exercise adjustment to be included as well as it keeping your records permanently in the app for your review. I had the Rapid Calc app but lost it when I got a new phone and it’s no longer available in the USA App Store. I’m dying for someone to duplicate it. But in the meantime, this is about the best anyone has to offer here in the US App Store, not to mention, it’s free with no adds. Can’t beat that. ### 5/5 — Simple and effective. *2025-01-04* I’ve tried a few insulin calculators and almost all them have over complicated UI and are almost too detailed. This app is great if you just want to do a simple insulin calculation to get an idea of an accurate dose without needless frills. **Developer response:** Thanks, glad you are finding the app useful! ### 5/5 — Nice and easy *2021-11-11* Can you add a feature that saves the calc in a history so you can look back. ### 5/5 — Awesome app! *2020-08-03* Developer is very responsive to customer input! **Developer response:** Thanks for your comment. The problem with crashing had been fixed with the latest build. ### 4/5 — Want It For Multiple Users *2026-06-11* I think this App is great!! Makes simple Bolus calculations easy. I just wish I could save multiple users all at the same time. (Please add this into your next update!) ### 4/5 — Simple, easy to understand *2025-04-17* I like that it’s set up for three different methods of calculation depending on your insulin sensitivity at various times of the day. I also like that it saves your settings instead of re-entering them every time. Would love an and be willing to pay a decent amount for IOB and exercise adjustment to be included as well as it keeping your records permanently in the app for your review. I had the Rapid Calc app but lost it when I got a new phone and it’s no longer available in the USA App Store. I’m dying for someone to duplicate it. But in the meantime, this is about the best anyone has to offer here in the US App Store, not to mention, it’s free with no adds. Can’t beat that. **Developer response:** Thanks for your positive review! In terms of IOB, there are a number of ways to calculate this, all very empirical, and really none of them are perfect. This would then also require users to enter the type of insulin and the time they gave the last injection, but the system wouldn't be able to track more than one injection at a time. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*