2,000 calories dominos pizzaDarren WeaverDomino's has one of the highest-rated apps of all time, with an average 4.8 rating from 1.8 million reviews.

Apple's App Store has over 2 million apps, so it can be hard to find which ones are worth your time and which ones aren't.

That's why Apple built in a rating system, to let users say which apps are 1-star and which ones are 5-star worthy. Apple's ratings and reviews influence how apps show up in search results, and you can see the rating before you download.

But which apps over the 10 years since the App Store first launched have had the most uniformly positive reviews?

App analytics firm Sensor Tower used its proprietary database to find the highest rated iOS apps by percentage of positive user review - defined by the percentage of 4- or 5-star reviews in the United States over the last 10 years. Only apps with over 100,000 reviews were considered.

The list will surprise you. Let's take a look:

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10. Wattpad

10. Wattpad

Wattpad, a social network for readers and writers, has a 4.6 average rating. It's free with in-app purchases.

9. Spotify

9. Spotify

Spotify has a 4.8 average rating on the App Store. It's free, but you need a subscription to get the most out of it.

8. Waze

8. Waze

Waze, Google's other maps app that intelligently avoids traffic, has an average 4.8 rating on the App Store. It's free.

7. Gasbuddy

7. Gasbuddy

Gasbuddy, a gas price comparison app, has an average 4.7 rating on the App Store. It's free.

6. Groupon

6. Groupon

Groupon, a deals aggregator, has an average 4.8 rating on the App Store. It's free.

5. Fandango

5. Fandango

Fandango, an app for looking up movie times and buying tickets, has an average 4.8 rating on the App Store. It's free.

4. Domino's Pizza

4. Domino's Pizza

The Domino's app for ordering pizza has a 4.8 average rating. It's free.

3. MyFitnessPal

3. MyFitnessPal

The Under Armour-owned app lets you track food intake and exercise and it's got a 4.7 average rating. It's free with in-app purchases.

2. Bible

2. Bible

Bible has a 4.9 average rating and it's free.

1. Relax Melodies: Sleep Sounds

1. Relax Melodies: Sleep Sounds

Naturally, the app with the highest percentage of 4- and 5-star ratings in the history of the App Store is a meditation app, Relax Melodies, with a 4.8 average rating. It's free with in-app purchases.

Here's the full chart from Sensor Tower.

Here's the full chart from Sensor Tower.