Polysthenics vs Spark (598450)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Polysthenics
Easily plan and schedule your fitness classes directly from your mobile device. View class schedules, sign up for sessions, and access studio location details. Optimize your time and enjoy the convenience of managing your fitness activities on the go.
- View class schedules
- Sign up for classes
- Access studio location
- Optimize time management
- Convenient mobile access
Read full descriptionHide full description
Download the Polysthenics App today to plan and schedule your classes! From this mobile App you can view class schedules, sign-up for classes, as well as view the studio’s location information. Optimize your time and maximize the convenience of signing up for classes from your device! Download this App today!
Spark (598450)
Read full descriptionHide full description
Motivation shouldn’t make you feel worse. Spark is a kinder way to work toward a healthier, happier you- built with the ADHD brain in mind, but designed for anyone who’s tired of all-or-nothing thinking, guilt, and starting over. Instead of asking you to be perfect, Spark helps you notice what’s actually happening. Tell your story. Check in about yesterday — your weight if you’re tracking it, the things that helped, the things that got in the way, and the wins that deserve more credit than they usually get. Meet your Pixies. Movement, water, protein, rest, veggies, calm, and other positive choices become Pixies worth celebrating. Because progress is more than a number on a scale. Name your Gremlins. Stress. Poor sleep. Hormones. Salty food. Couch-potato days. Spark treats them as information, not evidence that you “failed.” Gremlins can show up and Pixies can still visit on the very same day. See your whole Journey. Spark brings your weight, check-ins, Pixies, and Gremlins together so you can see the story behind the numbers. Over time, Spark can notice patterns in your own history and remind you what has tended to work well for you. Choose Your Spark. Choose the thing you’re excited to work on right now. Your Spark can last a day, a week, or however long it still feels right. Change it whenever you want. There are no streaks to protect and no rules about how long you have to stick with it — because what motivates you today doesn’t have to be what motivates you next week. Call in SOS backup. You know that moment when you’re about to do something you know you don’t really want to do... but you’re probably going to do it anyway? That’s what SOS backup is for. Give yourself two minutes. Get distracted, talk it through, or find a smaller option — with a slightly chaotic crew of gnomes ready to help. No streaks to protect. No perfect days required. No shame. Spark was created around a simple idea: healthier choices don’t have to be all or nothing. Your story will have good days, rough days, Pixies, Gremlins, unexpected victories, changed plans, and probably a little chaos. We’re all only human. Spark was built for that. Small steps. A brighter you.
Screenshots
Verdict
The clearest difference is ads: Spark (598450) at none against Polysthenics's shown. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Polysthenics ships an update monthly, Spark (598450) every 3 weeks. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.
| Parameter | Polysthenics | Spark (598450) |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 155 MB | 186 MB |
| Age rating | 4+ | 4+ |
| Developer | Polysthenics LLC | Dianna Dick |
In-app purchases
Polysthenics
No in-app purchases
Spark (598450)
No in-app purchases
Questions
Is Polysthenics free?
Is Spark (598450) free?
Do Polysthenics or Spark (598450) have ads?
Which is updated more often, Polysthenics or Spark (598450)?
Other comparisons















