04 · Stringing Log

Feature 3 of 4. One record per restring + auto reminder when it's time.

What it does

A "stringing log" tab on each racket's detail page. Each entry is one restring:

• Date
• String model (main + cross)
• Tension (main / cross)
• Stringer (optional)
• Notes
• Source — "Manual" / "From 05 · Tension conversion" (if entered via that handoff)

The latest record's date also drives the racket's "last restring" stamp on the list page.

Add a stringing record

1. Open the racket → Stringing log tab → + Add stringing record
2. Fill the form:

Field	Default	Notes
Date	Today	Past dates are also OK
String main	empty	Dropdown with our preset string library (Yonex BG65 / BG80, Wilson NXT, polyester series, etc.); can be custom
String cross	empty	Optional — leave blank for a single-string setup
Tension main	(inherits from racket profile)	lbs or kg; can override
Tension cross	(inherits)	Optional
Stringer	empty	Free text
Notes	empty	"2 overgrip layers / 1 dampener / strung 30 min"
Source	Manual	Set automatically to "From Tension conversion" if you came in via chapter 05

3. Save

Don't know the string model? Open Stringing log → String library for our preset list of a few hundred items; can be custom too.

The stringing library

The dropdown is backed by an offline string database:

• Brand: Yonex, Wilson, Babolat, Head, Prince, Luxilon, Tecnifibre, …
• Type: multifilament / polyester / natural gut / hybrid
• For each: typical play life (hours), recommended tension range

Filtering by type lets you see only what you've actually used.

Reminders

Mode A · By time

Simplest: remind every N days.

• Pick N (default 90, options 30 / 60 / 90 / 120 / 180)
• Pick reminder time window (default 09:00)
• On trigger, the App auto-archives the "last restring" date, and the next reminder counts from that day

Mode B · By play hours

More granular: estimate your weekly sessions × duration → total play hours; fire when you reach a target (e.g. 80 hours).

• Weekly play frequency (sessions)
• Average session duration (hours)
• Target play hours (default 80 hours / string; cross-string default 60 hours)
• String type coefficient (multifilament nylon 1.0; polyester 0.7; natural gut 0.5)

Example: 3 sessions / week × 2 hours = 6 h/week, nylon 1.0 → 80 / 6 ≈ 13 weeks ≈ 3 months.

The App has a "remind for main and cross separately" toggle for Mode B.

What do the reminders look like?

Android system notification:

┌──────────────────────────────────────┐
│ 🏸 AceCrush Craft        9:00 AM    │
│                                      │
│ "Main Blade" is due for restring     │
│ Last strung: 2026-04-15, 92d ago    │
│                                      │
│ [Snooze] [View] [Mark restringed]    │
└──────────────────────────────────────┘

• Mark restringed → jumps straight to "Add stringing record" (you fill the date, the old entry is auto-archived)
• Snooze → defer 24 hours
• View → racket detail page

Common questions

Can the tension come from the conversion tool?

Yes! That's the whole point of 05 · Tension conversion. When you're on the conversion result screen, tap "Use this tension → log stringing". The App jumps straight into "Add stringing record" with the tension pre-filled, the racket pre-selected, and the source marked as "From Tension conversion".

What if the system has notifications off?

Open system Settings → Apps → AceCrush Craft → Notifications and turn "Allow" back on. Then in the App, Me → Notifications & reminders reset all toggles.

Where do the strings live?

Offline in the App. They update alongside the App release; you can also add custom models.

I restring the same racket twice in a month — record both?

Yes. Each is its own entry. The reminder defaults to the latest one.

Deleting a racket

Detail page → top-right ··· → Delete racket.

Deleting also wipes all of its stringing records (no dangling data). Reminder again: this is on this device only — back up via Settings → Export → JSON first.