Help me choose
A stronger Pool Express option
Dolphin Liberty 200 and Dolphin Oasis Z5i are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Liberty
Dolphin Liberty 200
Inground and above-ground pools that need floor and wall cleaning, without a power cord.
Oasis
Dolphin Oasis Z5i
Inground pools up to 50 ft that need floor, wall and waterline cleaning with app scheduling.
What we recommend instead
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumDolphin Liberty 200 or Dolphin Oasis Z5i: our take
Dolphin Liberty 200 and Dolphin Oasis Z5i are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.
Pool fit and cleaning reach
Dolphin Liberty 200 is intended for inground and above-ground pools, while Dolphin Oasis Z5i is intended for inground pools. Dolphin Oasis Z5i has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Dolphin Liberty 200 cleans floor and walls; Dolphin Oasis Z5i cleans floor, walls, and waterline. Dolphin Liberty 200 lists Dual DC motors. Dolphin Oasis Z5i lists CleverClean navigation.
Filtration and debris
Dolphin Liberty 200 includes Basket; Dolphin Oasis Z5i includes Basket and UltraFilter. Dolphin Oasis Z5i has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Liberty 200 provides no fully published timer, app or remote specification; Dolphin Oasis Z5i provides a weekly timer and smartphone control. Dolphin Liberty 200 uses cordless battery power, while Dolphin Oasis Z5i uses continuous corded power.
Price, warranty and the decision
Dolphin Liberty 200 lists a 2-year warranty compared with 3 years for Dolphin Oasis Z5i. Dolphin Liberty 200 and Dolphin Oasis Z5i each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Feature check: what each robot actually has
A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.
| Feature | Dolphin Liberty 200 | Dolphin Oasis Z5i |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Not listed | Yes |
| Smartphone app | Not listed | Yes |
| Anti-tangle swivel | Not listed | Yes |
| 3-year warranty | No | YesEdge |
| No recharging between cycles | No | YesEdge |
| Built-in UV-C water treatment | No | No |
Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.
Where Dolphin Liberty 200 stands out
Dolphin Liberty 200 is the better fit for owners who value cordless handling more than automatic scheduling and continuous power.
- Cleans floor and walls
- Cordless, battery powered
Where Dolphin Oasis Z5i stands out
Dolphin Oasis Z5i is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning with app scheduling.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Includes filtration for sand, pollen and other fine debris
- Has documented smartphone control
- Carries a 3-year warranty instead of 2 years
Dolphin Liberty 200 vs Dolphin Oasis Z5i specifications
Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.
| Specification | Dolphin Liberty 200 | Dolphin Oasis Z5i |
|---|---|---|
| Best fit | Inground and above-ground pools that need floor and wall cleaning, without a power cord. | Inground pools up to 50 ft that need floor, wall and waterline cleaning with app scheduling. |
| Starting price | $999 | See product |
| Pool type | Inground, Above-ground | Inground |
| Maximum pool length | Not listed | Up to 50 ft |
| Cleaning coverage | Floor, Walls | Floor, Walls, Waterline |
| Power | Cordless | Corded |
| Filtration | Basket | Basket, UltraFilter |
| Scheduling | Not listed | Weekly schedule + app |
| App and remote | Not listed | App control |
| Cable | Cordless | Not listed |
| Robot weight | Not listed | 26.7 lb |
| Warranty | 2 years | 3 years |
Consider the stronger Pool Express option
Dolphin Liberty 200 and Dolphin Oasis Z5i are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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