Comparison

Abo Calculator vs STL Preview

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Abo Calculator

Features
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A App to calculate the Monthly Prices for your Abonnements, that you share with your Friends and Family.

About

STL Preview

Features
Read full description

STL Preview helps you open and inspect STL files directly on your iPhone or iPad, without needing to return to your computer just to check a 3D model. Whether you are preparing a 3D print, reviewing a design, sharing a model with someone, or quickly checking a part on the go, STL Preview gives you a simple way to see your model clearly in 3D. Open an STL file from Files, downloads, or the share sheet, then rotate, zoom, and examine it with smooth touch controls. Instead of guessing what a file contains from its name or waiting until you are back at your desktop CAD software, you can preview the model immediately. With AR mode, you can place your STL model into the real world using your device camera. This makes it easier to understand size, shape, and proportion before printing, presenting, or continuing your design work. You can also customize the model color and background color to make details easier to see. STL Preview is made for engineers, designers, makers, students, 3D printing users, and anyone who works with STL files and wants a faster, simpler way to inspect them on mobile. Open the file. View the model. Check it before you print, share, or continue.

Screenshots

Abo Calculator3 screens
STL Preview4 screens

Verdict

The call

The clearest difference is in-app purchases: Abo Calculator at none against STL Preview's 1. Abo Calculator also leads on ads (none vs shown). STL Preview's advantage is update cadence (every 3 days vs every 26 months). On price, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. STL Preview sells 1 one-off in-app purchase. Abo Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Abo Calculator ships an update every 26 months, STL Preview every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard3 real differences ยท 3 level
Abo Calculator versus STL Preview: the parameters behind the verdict, then further details
ParameterAbo CalculatorSTL Preview
PriceFreeFree
Update frequencyEvery 26 monthsEvery 3 days โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.216.0 โ€” better
Further details โ€” not scored
Size3 MB34 MB
Age rating4+4+
DeveloperDaniel PalmaEnes Akkus

In-app purchases

None

Abo Calculator

No in-app purchases

1 purchases

STL Preview

One-time1
  • Remove Ads$0.49

Questions

Is Abo Calculator free?
Abo Calculator is free to download, with no in-app purchases.
Is STL Preview free?
STL Preview is free to download, with in-app purchases available.
Do Abo Calculator or STL Preview have ads?
STL Preview shows ads; Abo Calculator does not.
Which is updated more often, Abo Calculator or STL Preview?
Abo Calculator ships an update every 26 months, and STL Preview every 3 days. Most recently, Abo Calculator was updated on October 25, 2026 and STL Preview on October 24, 2026.

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