# ODAlarm — OD600 Time finder and keeper

> OD600 Time finder and keeper (iPhone/iPad app by Yoshikazu Mikawa.)

- Source: https://appshunter.io/ios/app/odalarm/id6504723944 (this page in markdown: same URL + `.md`)
- Developer: [Yoshikazu Mikawa](https://appshunter.io/developer/1778069380)
- Category: Education
- Price: Free with in-app purchases (on sale, was $0.99)
- Age rating: 4+
- Requires: iOS 17.2 · 2 MB
- Languages: American English
- Released: 2024-06-24
- Data updated: 2026-05-18
- User reviews in markdown: https://appshunter.io/ios/app/odalarm/id6504723944/reviews.md

## What is ODAlarm?

Using bacteria in the log phase is crucial for many experiments and applications in microbiology and biotechnology. ODAlarm allows users to input OD600 values at two distinct time points during the log phase, along with their desired level of bacterial growth in the log phase. Based on these inputs, the application calculates the time required to achieve the desired growth level. Users can then set a timer within the app to notify them when the specified growth level is reached.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ODAlarm Premium Access | $0.99 | one-time |



## Version history (last 5 releases)

### 1.3.9 — 2025-10-22

Improved in-app purchase reliability and restore process.

### 1.3.8 — 2025-10-22

Added a feature to estimate lag time, showing when cells are expected to enter the exponential growth phase after inoculation.

### 1.2.7 — 2025-03-26

Added an alarm clock animation when the incubation time runs out.

### 1.2.6 — 2025-03-11

Added a notification sound when the culture reaches the desired growth level.

### 1.1.6 — 2025-03-07

Fixed a bug where the app properly returns to the timer page after accidentally going back to the welcome page.

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## More apps by Yoshikazu Mikawa

- [BioCaL](https://appshunter.io/ios/app/biocal/id6476985449)
- [MoLSoL](https://appshunter.io/ios/app/molsol/id6478563548)
- [CodonQ](https://appshunter.io/ios/app/codonq/id6479198761)
- [AirLify](https://appshunter.io/ios/app/airlify/id6479359307)
- [StoPify](https://appshunter.io/ios/app/stopify/id6480067024)
- [W8Bus](https://appshunter.io/ios/app/w8bus/id6502446764)

All apps by Yoshikazu Mikawa: https://appshunter.io/developer/1778069380

## Related topics

[odalarm](https://appshunter.io/ios/topics/odalarm) · [600times](https://appshunter.io/ios/topics/600times)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-18.*