MathLens vs Prevision Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MathLens
Instantly solve math problems by scanning them with your camera. Get detailed step-by-step explanations and visualize functions with an interactive graphing calculator. Supports a wide range of math subjects from pre-algebra to calculus.
- Instant problem scanning via camera
- Detailed step-by-step explanations
- Interactive graphing calculator
- Supports multiple math subjects
- AI helper for other subjects
- Handwritten and printed text recognition
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Scan any math problem with your camera and get the full solution. Every step explained, not just the answer. MathLens is the homework helper that teaches you the method, so you can solve the next one yourself. SNAP IT. SOLVE IT. UNDERSTAND IT. Point your camera at a problem, printed in a textbook or handwritten in your notebook, and MathLens reads it and solves it. No typing equations into a calculator, no hunting for symbols on a keyboard. GUIDED MODE: SOLVE IT YOURSELF This is what makes MathLens different from every app that just prints an answer. In Guided Mode you get one hint at a time. Try the next step on your own. Stuck? Tap Show Next Step. Still stuck? Reveal Full Solution is always one tap away. STEP-BY-STEP SOLUTIONS Every solution breaks into numbered steps with the reasoning behind each one: factoring, the quadratic formula, substitution and elimination, limits, derivatives, integrals, geometry proofs and trigonometric identities. ANSWERS THAT MATCH YOUR GRADE Set your study level, from Kindergarten and Primary through Middle School, High School and College, and every explanation is written for that level. YOUR AI TUTOR, ON CALL Ask a follow-up in plain language: why did you square both sides, explain that step again. The AI Tutor covers Math, Physics, Chemistry, Biology, History, Geography and Literature, and it remembers the problem you are working on. TURN ANY TOPIC INTO EXAM PRACTICE Type a topic, snap a worksheet, or upload a PDF or a recorded lecture. MathLens generates practice questions with study notes and a full answer key. See answers as you go, or take it as a quiz and get scored at the end. Ideal prep for SAT, ACT, AP, IB and finals. NOT JUST MATH Switch subjects right on the camera: Math, Physics, Chemistry, Biology, History, Geography, Literature, or General for anything else. Translate mode reads text from any page and translates it into 100+ languages. WRITE IT, SAVE IT, EXPORT IT No camera shot available? Open the Draw Board and write the problem with your finger or a stylus. A full scientific calculator is built in. Every problem you solve is saved to History, and any solution or study set exports as a PDF. MATHLENS PRO MathLens is free to use with daily limits. Pro removes the limits with a weekly or yearly subscription. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the period ends. Manage or cancel in your Apple ID settings. Privacy Policy: https://app.dngsoft.com/mathscan/privacy-policy Terms of Use: https://app.dngsoft.com/mathscan/terms-of-use
Prevision Lab
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Prevision Lab est l'application des élèves de la prépa Prevision. Elle réunit ce qui servait jusqu'ici sur ordinateur : les cours de tes professeurs, ton planning de la semaine, tes révisions et tes résultats. Réservée aux élèves inscrits. Les comptes sont ouverts par l'établissement : il n'y a pas d'inscription dans l'application. TES COURS Les polycopiés de tes matières, chapitre par chapitre, avec la vidéo du cours quand elle existe. Chaque document s'ouvre dans un atelier de lecture : tu cherches un mot dans tout le poly, tu surlignes, tu écris dans la marge, tu poses un pense-bête. Ce que tu ne comprends pas, tu le mets de côté d'un geste. TON PLANNING Ta semaine en grille horaire, comme un agenda. Tes cours particuliers, tes contrôles, tes révisions. Ta to-do se pose sur le planning au doigt : tu choisis le jour, l'heure et la durée, ou la journée entière. Tu peux importer ton agenda de classe. TES RÉVISIONS Des questions de QCM sur tes chapitres, reprogrammées selon ce que tu retiens : ce qui résiste revient plus souvent, ce qui est acquis s'espace. Tes flashcards, ton carnet d'erreurs, et un tableau de bord qui dit où tu en es matière par matière. TES CONCOURS Les annales du bac et des concours que tu vises, sujets et corrigés. Des concours blancs d'entraînement, à passer épreuve par épreuve ou d'une traite, avec la correction après chaque question. TON ASSISTANT Une question sur une notion, une méthode ou un concours, et une réponse appuyée sur les documents de cours de ta prépa, formules comprises. Il ne répond que là-dessus : ce n'est pas un moteur de recherche. CE QUE L'APPLICATION APPORTE AU TÉLÉPHONE Les notifications quand un contrôle approche ou qu'une correction arrive. Le déverrouillage par Face ID ou Touch ID, avec l'écran masqué quand l'application passe en arrière-plan. Le partage de tes documents de cours. La liste de tes appareils connectés, avec le retrait de l'un d'eux. Une page lisible quand le réseau tombe. CONFIDENTIALITÉ Aucune publicité, aucun traceur publicitaire, aucun suivi entre applications. De ton dossier, l'assistant ne reçoit que tes spécialités : ni ton identité, ni tes coordonnées, ni ta classe, ni tes notes. La politique de confidentialité est dans l'application, et la suppression de ton compte se demande depuis les Paramètres. Public : élèves de Première et de Terminale, 16 ans minimum.
Screenshots
Verdict
The clearest difference is in-app purchases: Prevision Lab at none against MathLens's 2. On price, update cadence, 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
Both are free to download. MathLens sells 2 in-app purchases, starting at $4.99 per 7 days. Prevision Lab asks for nothing beyond the download.
MathLens ships an update every 2 weeks, Prevision Lab fortnightly. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | MathLens | Prevision Lab |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 weeks — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 48 MB | 3 MB |
| Age rating | +4 | 4+ |
| Developer | DNG SOFT COMPANY LIMITED | MARIANNE (App) |
In-app purchases
MathLens
- MathLens Pro7 Days trial$4.997 Days
- MathLens Pro$49.991 Year
Prevision Lab
No in-app purchases









