Comparison

Topo Mobile vs GSD Drone Calculator

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

Head to head
About

Topo Mobile

Features
Read full description

Vous l’attendiez, vous la souhaitiez, elle est là ! Field & Solutions a enfin son appli mobile ! Vous êtes enquêteur mystère, préalablement inscrit sur www.job-enqueteur.com, et vous avez complété votre profil enquêteur. Bravo ! Vous faites désormais partis de l’équipe des enquêteurs mystère du Group Topo (Field & Solutions, Presence mystery shopping, Cegma Topo). Vous avez reçu des missions de visites mystère que vous avez choisi et validé. Vous avez à votre disposition les documents relatifs à la bonne réalisation de votre mission. Vous êtes allé en point de vente pour réaliser cette mission, tout en restant discret, sans vous faire démasquer, et en respectant le scénario de la visite. Ça y est, tout s’est bien passé et la mission est réalisée ! Il ne vous reste plus qu’à régler les derniers détails, et surtout le plus important : rendre le rapport de visite en remplissant le questionnaire de visite, en y ajoutant tous vos commentaires pertinents. Comment faire pour saisir au plus vite vos données de visites ? Il vous suffit de vous logger sur l’appli Topo Mobile, et de remplir le questionnaire de visite, tout de suite en sortant du magasin que vous venez de visiter en mystery shopping. Vous saisissez vos données de la même manière que sur le site internet de saisie du Group Topo, www.topo-enligne.com Votre visite mystère a lieu loin d’un réseau Wi-Fi ! Pas de panique ! L’appli Topo Mobile fonctionne en offline. Même sans réseau internet, ça fonctionne. Avant de partir en mission, loggez-vous sur Topo Mobile avec vos identifiants et rendez-vous sur le(s) questionnaire(s) de visite que vous allez devoir compléter dans la journée. Une fois sur place et après votre visite, loggez-vous à nouveau sur Topo Mobile, et rendez-vous sur vos questionnaires de visite pour les remplir. Bonnes visites et bonnes saisies en version mobile ! Création, conception et développement: Wazapp

About

GSD Drone Calculator

Calculate Ground Sample Distance (GSD) for drone missions with this intuitive tool. Input drone specs and camera details to get precise GSD values for optimal mapping, surveying, and photography. Streamline your data collection and enhance accuracy for all aerial endeavors.

Highlights
  • Accurate GSD calculations
  • Input drone and camera specifications
  • Real-time GSD values
  • Optimize flight planning
  • Intuitive user interface
  • Save calculations
  • Image resolution insights
Features
Read full description

Discover the power of precise Ground Sample Distance (GSD) calculations with the revolutionary GSD Drone Calculator app for iOS. Designed exclusively for drone enthusiasts, this cutting-edge tool takes your aerial endeavors to new heights by providing accurate GSD values for optimal mapping, surveying, and photography missions. Unlock the potential of your drone as you harness the advanced capabilities of GSD Drone Calculator. With its intelligent algorithms and state-of-the-art technology, this app delivers unparalleled accuracy in GSD calculations, ensuring your data is reliable and your results are impeccable. Using GSD Drone Calculator is a breeze. Simply input your drone's specifications, including flight altitude, camera resolution, and sensor details, and let the calculator handle the rest. In seconds, you'll have real-time GSD values at your fingertips, enabling you to plan your flights with utmost precision. Whether you're an aerial photographer capturing stunning vistas, a mapping professional conducting detailed surveys, or a researcher studying landscapes, GSD Drone Calculator is your trusted companion. Seamlessly integrate it into your workflow to optimize your data collection, enhance your mapping accuracy, and streamline your decision-making processes. The intuitive user interface of GSD Drone Calculator makes it effortless to navigate through the app's robust features. Customize your settings, explore different calculation algorithms, and save your calculations for future reference. The app also provides valuable insights into image resolution, image overlap, and other crucial factors influencing GSD. Stay ahead of the curve with regular updates and improvements that ensure GSD Drone Calculator remains at the forefront of drone technology. Our dedicated team of developers and industry experts continuously enhance the app's performance and add new features to meet your evolving needs. Whether you're a novice drone pilot or a seasoned professional, GSD Drone Calculator empowers you to make informed decisions, optimize your flights, and achieve superior data accuracy. Download GSD Drone Calculator now and take your drone operations to unprecedented levels of precision and efficiency. Explore the possibilities and redefine your aerial potential with GSD Drone Calculator. Contact: qpbd@ukr.net TERMS OF USE: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Topo Mobile3 screens
GSD Drone Calculator3 screens

Verdict

The call

The clearest difference is in-app purchases: Topo Mobile at none against GSD Drone Calculator's 3. Topo Mobile also leads on ads (none vs shown) and iOS requirement (8.0 vs 18.6). GSD Drone Calculator's advantage is update cadence (monthly vs every 2 months). On price 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. GSD Drone Calculator sells 3 in-app purchases, starting at $1.99 per month. Topo Mobile asks for nothing beyond the download.

UpkeepUpdate frequency

Topo Mobile ships an update every 2 months, GSD Drone Calculator monthly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 5 level
Topo Mobile versus GSD Drone Calculator: the parameters behind the verdict, then further details
ParameterTopo MobileGSD Drone Calculator
PriceFreeFree
Rating—4.0 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 2 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better18.6
Further details — not scored
Size30 MB2 MB
Age rating4+4+
DeveloperSA PRESENCERoman Akhromieiev

In-app purchases

None

Topo Mobile

No in-app purchases

3 purchases

GSD Drone Calculator

Subscriptions2
  • Month3 Days trial$1.991 Month
  • Annual3 Days trial$19.991 Year
One-time1
  • Lifetime$29.99

Questions

Is Topo Mobile free?
Topo Mobile is free to download, with no in-app purchases.
Is GSD Drone Calculator free?
GSD Drone Calculator is free to download, with in-app purchases available.
Do Topo Mobile or GSD Drone Calculator have ads?
GSD Drone Calculator shows ads; Topo Mobile does not.
Which is updated more often, Topo Mobile or GSD Drone Calculator?
Topo Mobile ships an update every 2 months, and GSD Drone Calculator monthly. Most recently, Topo Mobile was updated on October 28, 2026 and GSD Drone Calculator on October 24, 2026.

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