ISTUMBLE vs Respi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISTUMBLE
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.
- 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
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Winncare has collaborated with the Welsh Ambulance Services NHS Trust to develop ISTUMBLE ®, an algorithm and app used to determine the appropriate course of action in the occurrence of a fall. ISTUMBLE® empowers care providers to make good decisions around when to lift a fallen person and when to call an ambulance. A nationally recognised tool, the ISTUMBLE ® app is accredited by Orcha for use within the NHS. Used in conjunction with Mangar Lifting Cushions, the combination safeguards a fallen person by providing a safe and dignified lift, whilst protecting healthcare workers and carers from injury acquired through manual handling. Importantly, the ISTUMBLE® algorithm has been demonstrated to reduce the length of time that a fallen person is on the floor.
Respi
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.
- 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
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Respi-Rate helps healthcare professionals determine a patient's respiratory rate using manually recorded breath intervals. Press the Lungs button each time the patient begins to inhale. Respi-Rate estimates respiratory rate from the intervals between these button presses. The application does not automatically detect breathing and does not use device sensors to identify individual breaths. RESPI-RATE PRO Respi-Rate Pro adds tools for respiratory assessment and documentation: - Measurement history – review previous respiratory-rate determinations. - Breathing Regularity – assess the consistency of manually recorded breath intervals. - I:E Assessment – display the ratio of manually recorded inhalation and exhalation durations. This feature is experimental. - Age-based reference ranges – compare the respiratory-rate result with age-specific reference values. - Dark Mode – use an appearance optimized for low-light environments. All Pro features can be tried free for 7 days. No subscription. No automatic charge. The free trial ends automatically after 7 days, with nothing to cancel. Basic respiratory rate determination remains available free of charge. Pro can be unlocked permanently with a separate, one-time Lifetime Pro purchase. METHODOLOGY Respiratory rate is determined from breaths recorded manually by the user. For example, if the Lungs button is pressed at 00:00 and again at 00:05, with both presses made when the patient begins to inhale, the recorded interval is 5 seconds. This corresponds to an estimated respiratory rate of 12 breaths per minute (60 ÷ 5 = 12). After each press, the application evaluates whether enough respiratory intervals have been collected. If the required accuracy has not been reached, additional intervals are collected. With a regular breathing pattern, the algorithm continues collecting intervals until the estimated respiratory rate reaches an accuracy of 95% ± 1 breath per minute. Because breaths are recorded manually, results depend on consistent button timing. Press the button at the same phase of each respiratory cycle, preferably at the beginning of inhalation. Do not use Respi-Rate to determine respiratory rate when the patient's breathing is irregular. Respi-Rate Pro includes a breathing regularity assessment. When this feature is used, interpret the respiratory rate only when the regularity assessment reaches 3 stars. If fewer than 3 stars are achieved, repeat the measurement. The regularity assessment reflects the consistency of manually recorded breath intervals. It may be affected by irregular breathing or inconsistent button timing and does not represent the accuracy of the respiratory-rate determination. The experimental I:E Assessment depends on the accuracy of the user's button presses and does not establish a diagnosis. IMPORTANT Respi-Rate supports respiratory rate determination and does not replace clinical judgment. Always confirm unexpected results by direct observation. Interpret all results in the context of the patient's overall clinical condition and follow applicable clinical guidelines. Fast. Simple. Focused on respiratory rate.
Screenshots
Verdict
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.
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. 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.
| Parameter | ISTUMBLE | Respi |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (118 ratings) — better |
| Positive reviews | 0.0% of reviews | 87.5% of reviews — better |
| Number of ratings | — | 118 — better |
| Update frequency | Every 10 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 38 MB | 29 MB |
| Age rating | 12+ | 17+ |
| Developer | MANGAR INTERNATIONAL LIMITED | medappear s.r.o. |
Customer experience
ISTUMBLE
Respi
In-app purchases
ISTUMBLE
No in-app purchases
Respi
- 7-Day Free Pro TrialFree
- Lifetime Pro — Intro Offer$9.99
- Lifetime Pro$12.99








