SynStrategy vs LEMO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SynStrategy
This app categorizes organic reactions by the functional groups they form, aiding chemists in synthetic analysis. It offers over 500 transformations and 400 synthesis examples, with detailed subdivisions for clarity.
- Reactions categorized by functional group
- 27 main functional group categories
- Over 500 transformations
- Over 400 total synthesis examples
- Subdivided functional group categories
- Highlights synthetic use cases
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SynStrategy is an organic chemistry app for anyone studying or working in organic synthesis. Its key feature is the categorization of named reactions and unnamed chemical reactions by the functional groups they form, helping students and practitioners navigate the vast landscape of organic transformations. The app features 27 main functional group categories, each further subdivided (for example, Alcohols include primary, secondary, tertiary, allylic, and homoallylic alcohols, and more). This structured organization gives chemists a clearer view of available transformations during synthetic and retrosynthetic analysis. SynStrategy currently includes over 500 organic chemistry reactions, with their synthetic use cases highlighted in more than 400 total synthesis examples. NEW: We've added the mechanisms for a collection of classic named oxidation reactions, with more to come. Each mechanism includes literature references you can look up for further detail. The first set covers the Albright-Goldman, Anelli, Babler-Dauben, Baeyer-Villiger, Ball-Goodwin-Morton, Collins, Corey-Gilman-Ganem, Corey-Kim, Corey-Schmidt, Corey-Suggs, Criegee, Dakin, Davis, Davis Asymmetric, and TEMPO oxidations. Beyond the reference library, SynStrategy includes interactive tools to help you study organic chemistry and organize these transformations. Save specific reactions into custom datasets that can be exported and shared with colleagues. Test your knowledge with the app's study modes: a Quiz system featuring three formats with multiple-choice and advanced questions on chemical reactions and total synthesis steps, plus a traditional Flashcard mode. Both modes include session analytics so you can track your progress. NEW: A Statistics dashboard now lets you review your quiz and flashcard results, see what you've studied, and get an overview of your activity in the app over time (More → Statistics). Whether you're preparing for an organic chemistry (orgo) exam, reviewing named reactions and mechanisms, or planning a synthesis in the lab, SynStrategy aims to be a useful organic chemistry companion. There are countless exceptional total syntheses and synthetically relevant methodologies in the literature, and we aim to grow the selection over time. Have a particular organic reaction or total synthesis example you'd like to see added? E-mail us: serviceofsynthesis@gmail.com Summary of Features: - Named and unnamed reactions, categorized by functional group - Over 500 organic chemistry transformations - Mechanisms for selected reactions (more to come) - Over 400 total synthesis examples - Create, export, and import custom reaction datasets - Multi-format Quiz system with session analytics - Dedicated Flashcard mode for systematic review - Statistics to review your results and activity in the app over time If you need support, please contact serviceofsynthesis@gmail.com
LEMO
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Hast du genug von unübersichtlichem Lernchaos? Willkommen bei Lemo, der ersten App, die Lernen in ein episches Abenteuer verwandelt. Wir glauben, dass Produktivität nicht kompliziert sein muss. Lemo macht aus deinen Unterlagen, Notizen und Fragen ein interaktives Game. Warum Lemo dein neuer Game-Changer ist: - Dein KI-Begleiter: Frag den Lemo AI-Tutor alles, was du nicht verstehst. Dein persönlicher Axolotl-Sidekick führt dich durch komplexe Themen, bis du es wirklich drauf hast. - Wissen als Spiel: Sammle XP, schalte neue Level frei und behalte deinen Fortschritt im Blick. Lernen fühlt sich endlich nicht mehr nach Arbeit an, sondern nach Level-Up. - Deine Arena, deine Crew: Lade deine Freunde in deinen Squad ein. Kämpft gemeinsam in der Rangliste, vergleicht eure Fortschritte und pusht euch gegenseitig zum Ziel. - Intelligente Organisation: Schluss mit dem Zettelchaos. Deine gesamte Bibliothek ist an einem Ort – smart, sortiert und immer griffbereit. Egal ob für die Uni, die Schule oder deine nächste Zertifizierung: Lemo ist dein treuer Begleiter auf dem Weg zum akademischen Erfolg! Nutzungsbedingungen (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: SynStrategy at none against LEMO's 2. LEMO's advantage is update cadence (every 8 days vs every 3 months) and device support (3 vs 1). On price, ads and iOS requirement 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. LEMO sells 2 in-app purchases, starting at $6.99 per month. SynStrategy asks for nothing beyond the download.
SynStrategy ships an update every 3 months, LEMO every 8 days. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.
| Parameter | SynStrategy | LEMO |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (9 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 3 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 36 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Willi M. Amberg | Aleksandar Nedeljkovic |
In-app purchases
SynStrategy
No in-app purchases
LEMO
- LEMO PRO$6.991 Month
- LEMO ULTRA$12.991 Month









