# OptiAM vs Reliable Plant

The clearest difference is update cadence: OptiAM at every 3 months against Reliable Plant's every 9 months. OptiAM also leads on iOS requirement (12.4 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OptiAM ships an update every 3 months, Reliable Plant every 9 months. The most recent releases landed on October 26, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | OptiAM | Reliable Plant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/reliable-plant/id6451425531/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | — | Free |
| Size | 6 MB | 50 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andromeda Systems Inc.](https://appshunter.io/developer/1016968648) | [Noria Corporation](https://appshunter.io/developer/570003258) |

## What reviewers say

### OptiAM

[App page](https://appshunter.io/ios/app/optiam/id1276710132)

**Features:** macOS Compatibility

**In-app purchases:** none


### Reliable Plant

[App page](https://appshunter.io/ios/app/reliable-plant/id6451425531)

This conference guide allows attendees to personalize their event experience. Users can build custom schedules, provide feedback on sessions, take notes, and easily locate exhibitors.

**Highlights:** Customizable conference schedules, Session evaluation and feedback, Note-taking functionality, Exhibitor tracking, Digital conference guide

**In-app purchases:** none


## Frequently asked questions

### Is OptiAM free?

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

### Is Reliable Plant free?

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

### Do OptiAM or Reliable Plant have ads?

Neither OptiAM nor Reliable Plant shows ads.

### Which is updated more often, OptiAM or Reliable Plant?

OptiAM ships an update every 3 months, and Reliable Plant every 9 months. Most recently, OptiAM was updated on October 26, 2026 and Reliable Plant on October 8, 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.*