Blimbi vs Zero: documented fasting app features

In 30 seconds

Direct verdict

Blimbi is published on iOS and Android. It is an intermittent-fasting timer with an editable journal and short reads. Its two states are Fasting and Eating: you choose when to start and stop, with no automatic starts or stops. New installs sign in with Apple or Google (the journal is end-to-end encrypted, so Blimbi cannot read it); installs from before version 2.4.0 can keep using it without an account. It has no ads. Public App Store and Google Play listings document these features.

For a broad orientation, read the fasting-apps roundup. If a free timer and declared plan tiers are your main question, Blimbi versus BodyFast is the closest adjacent comparison. Neither page evaluates whether fasting is safe, effective, or appropriate for you.

Blimbi

Why Blimbi stands out

Released on iOS and Android, documented in the stores.

• ✓
  Free timer and flexible schedulesAvailable
• ✓
  Editable fasting journal and short readsAvailable
• ✓
  CSV journal exportAvailable
• ✓
  Sign in with Apple or Google, and no adsAvailable

At a glance

Decision	Our app · Blimbi	Zero
Timer and schedules	Documented across reviewed fields	Partially documented across reviewed fields
Tracking	Documented across reviewed fields	Partially documented across reviewed fields
Guidance	Documented across reviewed fields	Partially documented across reviewed fields
Integrations	Documented across reviewed fields	Partially documented across reviewed fields
Privacy and control	Partially documented across reviewed fields	Not confirmed across reviewed fields

Who each app fits

Zero may fit a person who wants a documented fasting-focused tool. Its reviewed Apple and Google listings describe timer reminders, tracking, streaks and trends, hydration, food-related tools, movement, sleep, mood inputs, and Apple Watch or Google Fit connections. The store material also describes a free timer and an optional Zero Plus tier. The full boundary between those tiers is not established field by field, so it would be inaccurate to promise which functions are included in every plan.

Blimbi focuses on timing and recording fasts. On iOS, optional diary logs for water, coffee, tea and other drinks, meal times, and body measurements (weight, height, waist, hip, chest, thigh and body-fat percentage) are off by default and enabled in Profile > diary settings. Meal entries record times only, without food items, calories or nutrition. Water, drink and meal-time entries stay on the device; weight and height join the end-to-end encrypted synced copy if you sign in and enable sync; other measurements stay on the device. The Android app records fasting logs only. These details were verified in the mobile source on September 29, 2026, rather than inferred from store listings. It does not track activity or symptoms or measure metabolism. It does not integrate Apple Health or Health Connect or offer AI or human coaching, recipes, community or challenges. Adding your clinician’s comment to a plan does not mean that Blimbi provides professional care.

How to read the verified matrix

The matrix separates present features, absent features and unconfirmed details. For Blimbi, “Yes” and “No” describe the current product, as documented in the stores and the mobile-source release ledger. “Not confirmed” means the reviewed sources do not establish a detail. A documented feature is not evidence of a clinical benefit and does not measure your metabolism.

Differences, privacy, and price caveat

Do not use this page to compare a subscription price. Zero’s reviewed listings mention a free trial and optional Plus access, but the source record does not provide a durable amount, currency, billing period, storefront, and verification context. Blimbi’s current price is shown in the app. Check the live purchase screen and terms before any subscription decision.

Blimbi’s timer is free. Blimbi Plus lets you build custom weekly rhythms, add your clinician’s comment and prepare a draft you review before saving. Price and terms appear in the app. We do not compare amounts or promise a universal trial: check the purchase screen in your store.

Blimbi can export the journal as CSV. The iOS listing also documents widgets, Live Activities, Shortcuts, Apple Watch and configurable reminders; those references do not attribute Apple features to Android. Stages are educational guidance based on time, not body measurements. Review permissions and the privacy policy before enabling optional synchronization.

Method, sources, and update

This comparison uses the Blimbi public App Store and Google Play listings plus Zero’s official site, US Apple listing, Google Play listing, privacy policy, terms, and data-storage help page. A feature is included only when those dated sources describe it. Conflicts and gaps remain visible, and vendor outcome claims are excluded. Compare Blimbi and Simple if meal plans and AI-coach material are more relevant to your decision.

Competitor sources retain their September 2, 2026 review; Blimbi’s store evidence was updated on September 28, 2026 (UTC). Refresh store, trial, privacy, and subscription details before publication or purchase; the next review should not treat “Not confirmed” as a negative product claim.