# Catalyst by APSM vs Retirement Countdown

Catalyst by APSM and Retirement Countdown are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Catalyst by APSM ships an update every 7 months, Retirement Countdown every 9 months. The most recent releases landed on September 18, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Catalyst by APSM | Retirement Countdown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/catalyst-by-apsm/id6480323124/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 9 months |
| Monetization | Free | — |
| Size | 45 MB | 24 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [APSM, LLC](https://appshunter.io/developer/1738694056) | [明航 李](https://appshunter.io/developer/1823569127) |

## What reviewers say

### Catalyst by APSM

[App page](https://appshunter.io/ios/app/catalyst-by-apsm/id6480323124)

This mobile application enhances field operations for the APSM Software Platform. It allows users to perform tasks like logging, inspections, and managing work orders. Access essential documents and asset information conveniently, both online and offline.

**Highlights:** Online and offline field operations, Logging and inspections, Corrective work orders, Download and review SOPs, MPs, TOS, P&IDs, Access asset information

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

**In-app purchases:** none


### Retirement Countdown

[App page](https://appshunter.io/ios/app/retirement-countdown-days/id6754011756)

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

**In-app purchases:** none


## Frequently asked questions

### Is Catalyst by APSM free?

Catalyst by APSM is free to download, with no in-app purchases.

### Is Retirement Countdown free?

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

### Do Catalyst by APSM or Retirement Countdown have ads?

Neither Catalyst by APSM nor Retirement Countdown shows ads.

### Which is updated more often, Catalyst by APSM or Retirement Countdown?

Catalyst by APSM ships an update every 7 months, and Retirement Countdown every 9 months. Most recently, Catalyst by APSM was updated on September 18, 2026 and Retirement Countdown on September 15, 2026.

---

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