# FMS Calculator vs SeaBag

The clearest difference is review sentiment: SeaBag at 100% against FMS Calculator's 20%. SeaBag also leads on rating (5.0 vs 1.7) and update cadence (every 5 days vs every 6 months). FMS Calculator's advantage is ratings volume (67 vs 10). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SeaBag holds the better App Store score, 5.0 against 1.7. That said, the two scores are not equally well evidenced: FMS Calculator has 67 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 20% of FMS Calculator's written reviews are positive against 100% of SeaBag's.

FMS Calculator ships an update every 6 months, SeaBag every 5 days. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | FMS Calculator | SeaBag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (67 ratings)](https://appshunter.io/ios/app/fms-calculator/id1031676371/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/seabag/id6771576312/reviews)** |
| Number of ratings | **67** | 10 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 89 MB | 81 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Program Executive Office for Enterprise Information Systems, Sea Warrior Program](https://appshunter.io/developer/1477503418) | [Long Cheung Ho](https://appshunter.io/developer/6771576494) |

## What reviewers say

### FMS Calculator

[App page](https://appshunter.io/ios/app/fms-calculator/id1031676371)

This app calculates potential Final Multiple Scores (FMS) for enlisted Sailors eligible for advancement. It allows users to explore "what if" scenarios by inputting FMS elements and provides historical data and graphical breakdowns. The app also links to relevant Navy advancement policies and guidance.

**Highlights:** FMS "what if" scenario calculation, Historical FMS score comparison, Graphical FMS breakdown, Pay grade-specific scoring, Links to Navy advancement policies

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

**In-app purchases:** none

**What reviewers like**

- 👍 Useful for exam preparation
- 💡 Provides basic exam info
- 🔗 Links to NAVADMIN/Instructions
- 📈 Helps track progress
- ✅ Accurate calculations (when working)

**What reviewers complain about**

- 🐛 Frequent crashing
- 🐛 App won't open
- 🐛 Calculator feature broken
- 🐛 Loading issues
- ❌ Outdated formulas/data

**Reported bugs**

- App crashes when tapping 'Go to Calculator'
- App crashes after clicking calculate fms
- App crashes as soon as you click calculator
- App crashes when you hit calculator after main opening screen
- App keeps crashing

**Requested features**

- Fix crashing bugs
- Update formulas for new exams
- Allow decimal input for RSCA
- Add type-in or +/- option for PMA scale
- Ensure app opens consistently


### SeaBag

[App page](https://appshunter.io/ios/app/seabag/id6771576312)

This app provides essential offline reference materials and tools for U.S. Navy Sailors. Access messages, regulations, calculators, and career planning utilities without an internet connection. Stay informed with push notifications for new messages and historical naval facts.

**Highlights:** Offline NAVADMIN & ALNAV search, Push notifications for new messages, MILPERSMAN, UCMJ, Uniform Regulations, Acronym decoder, BAH, Pay Charts, PFA/BCA calculators, SRB eligibility checker, Brag sheet builder

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

**In-app purchases:** none


## Frequently asked questions

### Is FMS Calculator free?

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

### Is SeaBag free?

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

### Which has better reviews, FMS Calculator or SeaBag?

SeaBag is rated higher. FMS Calculator averages 1.7 out of 5 from 67 ratings, while SeaBag averages 5.0 from 10 ratings.

### Do FMS Calculator or SeaBag have ads?

Neither FMS Calculator nor SeaBag shows ads.

### Which is updated more often, FMS Calculator or SeaBag?

FMS Calculator ships an update every 6 months, and SeaBag every 5 days. Most recently, FMS Calculator was updated on October 21, 2026 and SeaBag on October 7, 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.*