Stealth Core Deluxe Trainer
- Balance Board
- 300 pounds
- Plastic
- Yellow
- More reviewed than 92%
An interesting way to gamify plank training if the phone app format appeals to you, though it depends on the app working smoothly and there is no owner feedback here yet.
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How it ranks among the 81 balance boards we track
4.4★ across 3,800 Amazon ratings, Bayesian-smoothed toward the category average.
3,800 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 81 balance boards we track - how the scorecard works · full balance boards data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jul 5, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Stealth Core Deluxe, model Core Trainer Plankster, is a plank position core trainer that pairs with a free iOS or Android app, translating your body's movement into on screen game controls rather than counting reps. It reads motion through your phone's own sensors while the phone sits on the trainer during a plank.
Despite how it is filed in this catalog, this is not a balance board: it is a stationary plank base with 360 degree motion designed to be used in a plank position, not stood on. The app ships with four included games plus a leaderboard and challenge feature, and no subscription is required for the base game set. There are no reviews on file here to confirm long term durability.
- Phone app controlled plank core trainer
- 360 degree multi directional motion
- 4 free games with worldwide leaderboard
- Sessions pitched at about 3 minutes a day
Who it's for
Suits people who find standard plank holds tedious and want a game layer to hold their attention for short daily core sessions. Not a fit for anyone wanting a literal standing balance board or a subscription free training log without a phone involved.
Strengths and trade-offs
Drawn from this product's published specifications.
- Turns short plank holds into a phone controlled game
- 360 degree motion sensing for core work from multiple angles
- Four games and a leaderboard included at no extra cost
- Requires a phone and the companion app to function as designed
- No owner reviews yet to confirm long term durability
Performance notes
The base reads multi directional motion during a plank hold and feeds it to the connected phone's motion sensor, with the app translating those movements into game actions. Sessions are pitched at around three minutes a day rather than extended holds.
Specifications
| Brand | Stealth |
|---|---|
| Dimensions & fit | |
| Maximum Weight Recommendation | 300 pounds |
| Item Weight | 9.92 pounds |
| Item Dimensions L x W x H | 23.5 × 22.5 × 6.5 inches |
| Construction & materials | |
| Material | Plastic |
| Color | Yellow |
| Other details | |
| Part Number | PLNKSTER |
How it compares
This product against the closest alternatives we track in balance boards.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Stealth Core Deluxe TrainerThis product | 4.4 / 5 | 3,800 | 4.4 / 5 |
| Amazon Basics Wood Wobble Balance Trainer BoardAmazon | 4.6 / 5 | 15,500 | 4.7 / 5 |
| Gentle Monster Wobble Balance BoardGentle | 4.7 / 5 | 4,400 | 4.5 / 5 |
| Bosu Balance Ball Exercise TrainerBosu | 4.5 / 5 | 10,100 | 4.4 / 5 |
| Wobble Cushion Balance DiscWobble | 4.5 / 5 | 2,978 | 4.3 / 5 |
Similar balance boards from other brands
Questions about the Stealth balance boards
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the Stealth Core Deluxe Trainer a balance board?
No, despite how it is categorized here it is a plank position core trainer that reads motion through a phone placed on the base, not a standing balance board.
Do I need a subscription for the Stealth Core Deluxe app?
No subscription is required for the base app with its four included games, though a premium game version is offered separately.
How long are workouts meant to last on the Stealth Core Deluxe?
The product is built around short sessions, pitched at around three minutes a day in a plank position.