Previ vs Vietwich
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Previ
Access exclusive deals and superior pricing on a curated selection of premium products. This membership offers a unique way to save on high-quality items.
- Exclusive membership
- Superior pricing
- Premium products
- Curated selection
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An exclusive membership with access to superior pricing on premium products.
Vietwich
Easily order your favorite Vietnamese sandwiches, bowls, and drinks for pickup or delivery. Skip the line and pay directly through the app for a convenient and quick experience.
- Order sandwiches, bowls, and drinks
- Skip the wait with pre-ordering
- Pickup and delivery options
- In-app payment
- Catering trays available
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Vietwich — sandwiches, bowls, trays, milk tea, smoothies, and tea. Order ahead and skip the wait on pickup and delivery.
Screenshots
Verdict
The clearest difference is rating: Vietwich at 5.0 against Previ's 3.1. Vietwich also leads on ads (none vs shown) and update cadence (every 6 days vs monthly). Previ's advantage is ratings volume (55 vs 2) and iOS requirement (15.1 vs 18.0). On price, 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.
Vietwich holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Previ has 55 ratings behind it against 2, so its average is the more settled of the two.
Previ ships an update monthly, Vietwich every 6 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | Previ | Vietwich |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (55 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 29.6% of reviews | — |
| Number of ratings | 55 — better | 2 |
| Update frequency | Monthly | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 26 MB | 86 MB |
| Age rating | 4+ | 4+ |
| Developer | Previ Inc. | Per Diem Subscriptions, Inc. |
Customer experience
Previ
Vietwich
In-app purchases
Previ
No in-app purchases
Vietwich
No in-app purchases
Questions
Is Previ free?
Is Vietwich free?
Which has better reviews, Previ or Vietwich?
Do Previ or Vietwich have ads?
Which is updated more often, Previ or Vietwich?
Other comparisons
