# ISTUMBLE vs Respi

The clearest difference is review sentiment: Respi at 88% against ISTUMBLE's 0%. Respi also leads on update cadence (every 8 days vs every 10 months). ISTUMBLE's advantage is in-app purchases (none vs 3). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Respi sells 3 one-off in-app purchases. ISTUMBLE asks for nothing beyond the download.

ISTUMBLE ships an update every 10 months, Respi every 8 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ISTUMBLE | Respi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (118 ratings)](https://appshunter.io/ios/app/respi-rate/id1508183194/reviews)** |
| Number of ratings | — | **118** |
| Positive reviews | 0.0% of reviews | **87.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 8 days** |
| Monetization | Free | Free |
| Size | 38 MB | 29 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [MANGAR INTERNATIONAL LIMITED](https://appshunter.io/developer/1449708947) | [medappear s.r.o.](https://appshunter.io/developer/1508183193) |

## What reviewers say

### ISTUMBLE

[App page](https://appshunter.io/ios/app/istumble/id1449708948)

This medical assessment tool helps care providers determine the best course of action after a fall. It guides decisions on whether to lift a fallen person or call for an ambulance, aiming to reduce the time a person remains on the floor. The app is accredited for NHS use and works with lifting cushions for safe patient handling.

**Highlights:** Fall assessment algorithm, Decision support for lifting or ambulance, NHS accredited tool, Works with Mangar Lifting Cushions, Reduces time on floor, Safe and dignified lifting

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Respi

[App page](https://appshunter.io/ios/app/respi-rate/id1508183194)

This app assists healthcare professionals in accurately measuring a patient's respiratory rate. It uses an innovative algorithm and a simple button press to calculate breaths per minute, accounting for user reaction time for precise results. Designed for regular breathing patterns, it ensures accuracy within 95% ± 1 breath/min.

**Highlights:** Accurate respiratory rate calculation, Innovative algorithm, Simple one-button interface, Accounts for user reaction time, Ensures 95% ± 1 breath/min accuracy, Designed for regular breathing patterns

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-Day Free Pro Trial | Free | one-time |
| Lifetime Pro — Intro Offer | $9.99 | one-time |
| Lifetime Pro | $12.99 | one-time |


## Frequently asked questions

### Is ISTUMBLE free?

ISTUMBLE is free to download, with no in-app purchases.

### Is Respi free?

Respi is free to download, with in-app purchases available.

### Do ISTUMBLE or Respi have ads?

Neither ISTUMBLE nor Respi shows ads.

### Which is updated more often, ISTUMBLE or Respi?

ISTUMBLE ships an update every 10 months, and Respi every 8 days. Most recently, ISTUMBLE was updated on October 26, 2026 and Respi on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*