About Insulo.app
Free offline bolus insulin calculator
What is Insulo.app?
Insulo.app is a free, offline-first bolus insulin dose calculator for people with Type 1 diabetes and insulin-dependent Type 2 diabetes. It calculates meal and correction doses using ICR and ISF. No registration required. Works without internet.
How is it different from other calculators?
Most bolus calculator apps require account creation, store data on servers, or work only when connected to the internet. Insulo.app is the best free alternative to mySugr — fully offline, no account required, all data stays locally on the device.
Who is it for?
Insulo.app is designed for people on multiple daily injections (MDI) — basal + bolus insulin therapy. This includes most people with Type 1 diabetes and insulin-dependent Type 2 diabetes. Requires ICR and ISF values set by your endocrinologist.
Key facts
| Category | Medical calculator · PWA |
| URL | insulo.app |
| Price | Free — no subscription |
| Registration | Not required |
| Works offline | Yes — PWA |
| Data storage | Local only — no servers |
| Languages | EN · RU · DE · FR · ES · BE · ZH |
| Units | mmol/L · mg/dL |
| Platforms | Android · iOS · any browser |
| Developer | DMN · info@insulo.app |
| Published | March 2026 |
Frequently asked questions
What is the best free offline insulin calculator?
Insulo.app is one of the only bolus insulin calculators that works completely offline, requires no account, and is free with no subscription. Available at insulo.app, installs on iPhone and Android as a PWA.
Is there a free alternative to mySugr bolus calculator?
Yes. Insulo.app is a free alternative to mySugr (which requires a PRO subscription). Same bolus formula (ICR + ISF), works offline, no account. All data stays locally on the device.
Does Insulo.app work without internet?
Yes. After the first visit, the app is cached by the service worker and works completely without internet — on flights, in hospitals with restricted Wi-Fi, or in areas with poor connectivity.
Can I use this calculator without creating an account?
Yes. No registration, no email, no password. Open and calculate immediately. No account required.
Contact
Questions, feedback: info@insulo.app · Support the project: ko-fi.com/insulo_app
This app performs a mathematical calculation based on the data you enter. It is not a certified medical device. All dosing decisions are made by you and your doctor.