Solving Pythagoras PRO vs Substage
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solving Pythagoras PRO
Easily calculate the sides of a right-angled triangle using the Pythagorean theorem. Input two sides to find the third, with all calculations saved in a history. Supports fractions and provides clear solution steps.
- Pythagorean theorem calculations
- Calculate any of the three sides
- Fraction input support
- Calculation history
- Clear solution steps
- Manual history sorting and deletion
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The calculation of a right-angled triangle is no longer a problem. All edges are calculated with the Pythagorean theorem. If you enter the value of two edges, the third is calculated. All calculations are stored in a history. The final solution can be shared. [Contents] - the edges a, b and c can be entered - calculation of the third edge with the Pythagorean theorem - history function that saves input - complete solution - the entering of fractions is supported - no ads! [ Application ] - there are 3 fields for entering the values using a modified keyboard - if you have not entered enough values, the text fields are highlighted in yellow - if you have entered invalid values, the corresponding text field is highlighted in red - you can switch between the solution, input view and history by swiping and / or touching the buttons - the entries in the history can be deleted or sorted manually - if you select an entry in the history, it will be loaded automatically for the calculation - the entire history can be deleted by pressing a key
Substage
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SubStage is a tool designed to provide an expressive space for the inner worlds of children, adolescents, and adults through the construction of scenes. Inspired by the “Scenotest” projective test—originally developed by Gerhild von Staabs—this digital format enables the playful representation and processing of unconscious conflicts, emotions, and relationship patterns under professional therapeutic guidance. The subject (child, adolescent, or adult) is prompted by a practitioner to intuitively construct a scene using three-dimensional figures, much like on a stage. There is no right or wrong; every individual is free to develop their own unique scene. The practitioner facilitates the process based on their specific professional and therapeutic expertise. SubStage facilitates interpersonal contact and supports both verbal and, in particular, non-verbal communication for children, adolescents, and adults alike. SubStage was conceptualized and developed by child and adolescent psychiatrist Dr. med. Kerstin De Nicolò, this app is already being successfully utilized in her practice with young patients. See https://loopius.de/substage
Screenshots
Verdict
The clearest difference is price: Substage at Free against Solving Pythagoras PRO's $1.99. Solving Pythagoras PRO's advantage is in-app purchases (none vs 3) and update cadence (every 5 weeks vs every 3 months). On ads and device support 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
Substage is free to download; Solving Pythagoras PRO costs $1.99 up front. Substage sells 3 in-app purchases, starting at $12.99 per month. Solving Pythagoras PRO asks for nothing beyond the download.
Solving Pythagoras PRO ships an update every 5 weeks, Substage every 3 months. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.
| Parameter | Solving Pythagoras PRO | Substage |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.2 (35 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 35 — better | — |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 179 MB | 227 MB |
| Age rating | 4+ | 4+ |
| Developer | Glindemann, Sennoun, Langer GbR | Loopius Software UG (haftungsbeschraenkt) |
In-app purchases
Solving Pythagoras PRO
No in-app purchases
Substage
- SubStage Pro - monthly1 Month trial$12.991 Month
- SubStage1 Month trial$34.993 Months
- SubStage Pro - jährlich1 Month trial$89.991 Year
Questions
Is Solving Pythagoras PRO free?
Is Substage free?
Do Solving Pythagoras PRO or Substage have ads?
Which is updated more often, Solving Pythagoras PRO or Substage?
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