Comparison

Solving Pythagoras PRO vs Substage

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

Head to head
About

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.

Highlights
  • Pythagorean theorem calculations
  • Calculate any of the three sides
  • Fraction input support
  • Calculation history
  • Clear solution steps
  • Manual history sorting and deletion
Features
Read full description

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

About

Substage

Features
Read full description

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

Solving Pythagoras PRO4 screens
Substage3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Solving Pythagoras PRO versus Substage: the parameters behind the verdict, then further details
ParameterSolving Pythagoras PROSubstage
Price$1.99Free — better
Rating4.2 (35 ratings) — better—
Positive reviews71.4% of reviews—
Number of ratings35 — better—
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.2
Further details — not scored
Size179 MB227 MB
Age rating4+4+
DeveloperGlindemann, Sennoun, Langer GbRLoopius Software UG (haftungsbeschraenkt)

In-app purchases

None

Solving Pythagoras PRO

No in-app purchases

3 purchases

Substage

Subscriptions3
  • 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?
Solving Pythagoras PRO costs $1.99, with no in-app purchases.
Is Substage free?
Substage is free to download, with in-app purchases available.
Do Solving Pythagoras PRO or Substage have ads?
Neither Solving Pythagoras PRO nor Substage shows ads.
Which is updated more often, Solving Pythagoras PRO or Substage?
Solving Pythagoras PRO ships an update every 5 weeks, and Substage every 3 months. Most recently, Solving Pythagoras PRO was updated on October 4, 2026 and Substage on October 5, 2026.

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