UseePlus vs GTP API Gravity Calculator2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UseePlus
This application allows you to view your phone's photo album files directly on your mobile device. It connects via USB to your phone, providing easy access to your media library.
- Connects via USB
- View photo album files
- Control software for MFI devices
- Access phone media library
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USEEPlus is a control software for MFI devices It is connected to the mobile phone via USB You can view your phone's photo album files through the app
GTP API Gravity Calculator2
This application calculates the corrected API gravity at 60°F for jet, gasoline, and diesel fuels. It also determines the total weight of the fuel. It's a digital replacement for physical slide calculators.
- Corrected API gravity calculation
- Total fuel weight calculation
- Supports jet, gasoline, and diesel fuels
- Digital version of slide calculators
- Developed in 2025
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The GTP API Gravity Calculator v2 (Developed 2025) from Gammon Technical Products, Inc. provides users the ability to determine corrected API at 60 Deg F for jet, gasoline, and diesel fuels. The calculator is a digital version of our GTP-3012-1A and GTP-2727EF slide calculators and it also is capable of calculating the total weight of the fuel.
Screenshots
Verdict
The clearest difference is review sentiment: GTP API Gravity Calculator2 at 100% against UseePlus's 25%. GTP API Gravity Calculator2 also leads on rating (4.0 vs 2.4). UseePlus's advantage is price (Free vs $9.99) and ratings volume (303 vs 1). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
UseePlus is free to download; GTP API Gravity Calculator2 costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GTP API Gravity Calculator2 holds the better App Store score, 4.0 against 2.4. That said, the two scores are not equally well evidenced: UseePlus has 303 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 25% of UseePlus's written reviews are positive against 100% of GTP API Gravity Calculator2's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 13, 2026 and September 24, 2026 respectively.
| Parameter | UseePlus | GTP API Gravity Calculator2 |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 2.4 (303 ratings) | 4.0 (1 ratings) — better |
| Positive reviews | 25.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 303 — better | 1 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 33 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | 亮 连 | Gammon Technical Products |
Customer experience
UseePlus
GTP API Gravity Calculator2
Bugs and requests
UseePlus
Reported bugs
3 issues- App freezes or crashes frequently
- Device not detected even when connected
- Inconsistent performance after software updates
Requested features
3 requests- Ability to switch between front and side cameras
- Option to save photos/videos without full library access
- Improved focus and zoom controls
GTP API Gravity Calculator2
Not enough reviews yet to summarise bugs or requests.
In-app purchases
UseePlus
No in-app purchases
GTP API Gravity Calculator2
No in-app purchases
Questions
Is UseePlus free?
Is GTP API Gravity Calculator2 free?
Which has better reviews, UseePlus or GTP API Gravity Calculator2?
Do UseePlus or GTP API Gravity Calculator2 have ads?
Which is updated more often, UseePlus or GTP API Gravity Calculator2?
Other comparisons
