# Tempdrop vs OTO Life

The clearest difference is review sentiment: OTO Life at 100% against Tempdrop's 39%. OTO Life also leads on rating (5.0 vs 4.2) and in-app purchases (none vs 6). Tempdrop's advantage is ratings volume (711 vs 3) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Tempdrop sells 6 in-app purchases, starting at $2.99 per month. OTO Life asks for nothing beyond the download.

OTO Life holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Tempdrop has 711 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 39% of Tempdrop's written reviews are positive against 100% of OTO Life's.

Tempdrop ships an update every 2 months, OTO Life every 2 weeks. The most recent releases landed on October 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Tempdrop | OTO Life |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (711 ratings)](https://appshunter.io/ios/app/tempdrop/id1199061141/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/oto-life/id1618243742/reviews)** |
| Number of ratings | **711** | 3 |
| Positive reviews | 38.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 103 MB | 94 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Tempdrop Inc](https://appshunter.io/developer/1674554833) | [OTO](https://appshunter.io/developer/1717332730) |

## What reviewers say

### Tempdrop

[App page](https://appshunter.io/ios/app/tempdrop/id1199061141)

This app works with a specialized thermometer to track subtle overnight temperature changes. It helps identify hormonal fluctuations throughout the menstrual cycle, pinpoint ovulation, and predict cycle phases. The data supports fertility awareness and cycle tracking.

**Highlights:** Basal body temperature tracking, Ovulation pinpointing, Menstrual cycle prediction, Hormonal fluctuation correlation, Fertility awareness support

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tempdrop Promo Premium monthly | $2.99 | per month |
| Tempdrop Premium monthly | $6.00 | per month |
| Tempdrop Promo Premium quarterly | $7.99 | per 3 months |
| Tempdrop Premium quarterly | $15.00 | per 3 months |
| Tempdrop Promo Premium yearly | $24.99 | per year |
| Tempdrop Premium yearly* | $48.00 | per year |

**What reviewers like**

- 🚀 Convenient and easy to use
- 🚀 Accurate temperature tracking
- 👍 Helpful for fertility awareness and family planning
- 👍 Empowering for understanding one's body
- 👍 Useful for tracking hormonal fluctuations

**What reviewers complain about**

- 🐛 Issues with app syncing and functionality
- 🔍 Limited symptom and data tracking options
- 💰 Expensive device and subscription model
- 👎 Poor customer service and support
- 👎 Unreliable hardware and short device lifespan

**Reported bugs**

- App crashes and freezes
- Issues with syncing device data
- Inaccurate cycle predictions and phase tracking
- Temperature data changes over time

**Requested features**

- Improved sleep tracking capabilities
- More customizable symptom and data tracking
- Ability to manually confirm ovulation
- Integration with other fertility/health apps
- Support for irregular cycles and postpartum/breastfeeding phases


### OTO Life

[App page](https://appshunter.io/ios/app/oto-life/id1618243742)

This app uses patented hardware and a proprietary wearable to measure ECG and EEG data. It analyzes this information to create adaptive activity plans, helping users manage stress and achieve health improvements by aligning their body to an optimal state.

**Highlights:** ECG and EEG measurement, Proprietary wearable integration, Cloud data analysis, Adaptive activity plans, Stress level reduction, Health goal management

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

**In-app purchases:** none


## Frequently asked questions

### Is Tempdrop free?

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

### Is OTO Life free?

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

### Which has better reviews, Tempdrop or OTO Life?

OTO Life is rated higher. Tempdrop averages 4.2 out of 5 from 711 ratings, while OTO Life averages 5.0 from 3 ratings.

### Do Tempdrop or OTO Life have ads?

Neither Tempdrop nor OTO Life shows ads.

### Which is updated more often, Tempdrop or OTO Life?

Tempdrop ships an update every 2 months, and OTO Life every 2 weeks. Most recently, Tempdrop was updated on October 18, 2026 and OTO Life on September 17, 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.*