Comparison

Solis vs 21a OBMEP

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

Head to head

About

Solis

Features

Read full description

Aplicativo educacional da Solis

About

21a OBMEP

This app allows school administrators to digitize and submit student answer sheets for a math competition. It also facilitates the completion of administrative forms related to the competition.

Highlights

Digitize answer sheets
Submit student responses
Fill out administrative forms
Digital submission of answer cards
Complete RAIG and Shipping Document

Features

Read full description

Se você é responsável pela aplicação das provas da OBMEP em sua escola você pode usar este aplicativo para digitalizar e enviar os cartões resposta dos alunos selecionados na 1ª. fase da OBMEP ao invés de envia-los pelo Correios. Você poderá também preencher os RAIG e o Documento de Envio.

Screenshots

Solis4 screens

21a OBMEP4 screens

Verdict

The call

The clearest difference is update cadence: 21a OBMEP at every 4 days against Solis's every 2 months. On price, ads, in-app purchases 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

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

UpkeepUpdate frequency

Solis ships an update every 2 months, 21a OBMEP every 4 days. The most recent releases landed on October 3, 2026 and September 24, 2026 respectively.

Scorecard1 real difference · 7 level

Solis versus 21a OBMEP: the parameters behind the verdict, then further details
Parameter	Solis	21a OBMEP
Price	Free	Free
Positive reviews	—	0.0% of reviews
Update frequency	Every 2 months	Every 4 days — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.1	15.1
Further details — not scored
Size	27 MB	21 MB
Age rating	4+	4+
Developer	Inca Tecnologia de Produtos e Servicos Ltda.	Instituto de Matematica Pura e Aplicada

In-app purchases

None

Solis

No in-app purchases

None

21a OBMEP

No in-app purchases

Questions

Is Solis free?

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

Is 21a OBMEP free?

21a OBMEP is free to download, with no in-app purchases.

Do Solis or 21a OBMEP have ads?

Neither Solis nor 21a OBMEP shows ads.

Which is updated more often, Solis or 21a OBMEP?

Solis ships an update every 2 months, and 21a OBMEP every 4 days. Most recently, Solis was updated on October 3, 2026 and 21a OBMEP on September 24, 2026.